September weather forecast
Starr, FL

September, the first month of the autumn in Starr, is also a hot month, with an average temperature fluctuating between 87.8°F (31°C) and 70.7°F (21.5°C).

Temperature

The high-temperature average in September for Starr is a still hot 87.8°F (31°C), staying closely aligned with August's conditions. Throughout September, Starr records an average temperature of 70.7°F (21.5°C) at night.

Heat index

The heat index value for September is appraised at an extremely hot 104°F (40°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The months with the highest humidity are August, September and December, with an average relative humidity of 77%.

Rainfall

In Starr, Florida, in September, during 19.5 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. In Starr, during the entire year, the rain falls for 173.6 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

January, March through December are months without snowfall in Starr, Florida.

Daylight

The average length of the day in September in Starr is 12h and 20min.
On the first day of the month, sunrise is at 7:09 am and sunset at 7:54 pm. On the last day of September, in Starr, Florida, sunrise is at 7:25 am and sunset at 7:18 pm EDT.

Sunshine

The average sunshine in September in Starr is 8.5h.

UV index

In Starr, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 6 in September translates into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.